Grinding-wheel-sharpening device.



J. A. STANSBUR Y.

GRINDING WHEEL SHARPENING DEVICE. APPLICATION FILED JUNE 16. 1911 ,4 TTOR/VEY 2'8 v v v I WITNESSES: 2,6 7 INVENTOH particularly to devices for truing the sharp- JOSEPH A. smnswmtmofs n vGnLEs, 'onnrrfon'nm.

snmmne-wnnnnsnanrnnme' DEVICE.

Specification of Letters Patent.

Application filed June is, 1917. f Serial 1810 175169.

To all whom it may concern:

Be it known that I, J OSEPH A. ST NsnURY, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Grinding- VVheel-Sharpening Devices, of which the following is a specification.

My invention relates to improvements in grinding-wheel sharpening devices and more edges of'the grinding wheel as for glass grinders or cutters; and the objects-of my improvements are, to provide an oscillating movement. for the diamond so as to bring the diamond to both sides of the sharp edge of the grinding wheel; to provide an adjust-- able stop so as to allow a setting of the oscillating movementto procure a certain surface on each side of the grinding wheel to be sharpened; to provide a second oscillating movement at right angles to the first oscils lating movement incorporating a diamond carrying lever, the diamond on'the lever passing by this oscillating movement over the sides of the grinding wheel in an angle set by the adjustable stop in combination with the first named oscillating movement; the invention consisting in the construction, combination and arrangement of devices hereafter more fully described and claimed, and illustrated in the accompanying drawing, in which- I Figure l is a side elevation of my device, partly in mid-section. j v

Fig. 2 is a detail side elevation of the diamond carrying lever of my device.

Fig. 3 is a horizontal cross section on line 33 of Fig. 1. v v V Similar numbers refer to similar, parts throughout the papers. i.

In Fig. 1, 4: designates a grinding wheel for producing cut-glass and for similar purposes, near which my attachment is used. A diamond 5 is mounted on a lever6, which is swingably mounted on the frame7 by the pivot 8. The lower extension 9 of the lever terminates in a section of a bevel-gear 10, which engages with the bevel gear pinion 11. The pinion 11 is secured to the shaft 12 by the key 13. The shaft 12 is provided with an enlargement 14 nearthe pinion forming an engaging member turnably journaled in abearingmember 15, provided on the frame A friction member 16 is disposed within the bearing member 15 of the'frameholiding the shaft 12 engaged with the framers a suitable extent, as will later on be described. The shaft 12 extends downwardly below the base plate 17 having'a gear18 secured totlie lower end by the key 19. A standard 20 is provided onthebase plate forming the bearings21 and 22 for the shaft. The lower end 23 of the frame terminates in abent end 2 1, having a hole surrounding the standard at the lower end near the base plate. A locking member 25 is secured to the base plateengaging slidingly over the end 24 of the frame holding thefranie position but allowing an oscillating move mentofthe frame around the standard 20.

An adjustable lever 26 is .pivotally mounted thebase plate at 27 having extension ends 28, seeFig. 2, projecting into the path of the oscillating frame 7 thereby forming,

stops for theoscillating movement, the edge 29 of the frame hitting.thejextensionend 28 of the adjustable lever when the frame comes to theposition indicated at 30 in dotted lines, while the edge 31 will: hit the,

extension end on, the opposite Side of, base plated? when the frame oscillates to d ot y n ct d wth vsrend. 32 of the adjustable lever is the screw rod Which is op rate aby th t 4; t e u being turnably disposed in the bloekl 35 resting with the shoulder 36 against the block. 35. fromone side While the ,farther endfl3 7 of the nut is slightly rolled or riveted over the other side of the block holdingthe nut turnablylwithin the block. J K H j A turning of the ,nut 34: causesthe rod 33 to move to tone or the other side, this caus ing the adjustable lever-26 to tilt corre-. spondinglyfto one or the other side thereby setting a stop to the oscillating movement of the frame 7, in Fig. 2 ofthe. drawing,

the lever being shown to allow the oscillatratenteaivewc, 191 a.

ing of the frame to. apositionahout at right angles to .each other at th'e'stopping points on the opposite sides, but it will easily be understood, that by the adjusting of the screw rod 33 any desired position may be obtained.

An operating lever 38 is .pivotally mounted between the block 35'and the baseaplate around an extension end '39., of the block extending beyond the pivot support terminatingin'a gear segmentE LO. The-gear segment 40 engages with the gear 18.

It will easily be understood that the lever 38 may be connected to a moving part of the grinding mechanism thereby receiving its motion, swinging back and forth, and this motion is naturally transmitted by the gearsegment 40 on the lever 38 to the gear 18 on the shaft 12. 1

Since the shaft 12 turns freely in the bearings 21 and 22 of the standard on the base plate, but, by the friction member 16 with in the bearing 15 of the frame, is engaged to a certain extent with the frame, the whole frame together with the shaft 12, bevel gear pinion 11, bevel gear segment 10 and the dia mond carrying lever 6 is oscillated around the standard 20 until the frame 7 comes to engagement with one of the extension ends 28 on the adjustable lever 26 when the motion of the lever 38 transmitted to the gear 18 and shaft 12 will overcome the slight friction between the friction member 16 and the engaging member 141 on the shaft thereby turning the shaft with the engaging member 14 and the bevel gear pinion 11 further to a suitable extent so as to cause the bevel gear segment 10 with the diamond carrying lever to swing around the pivot 8. The frame standing in a desired position set by the adjustable lever 26, as described in relation with Fig. 2, will naturally cause the diamond carrying lever 6 to pass over the edge of the grinding wheel l. in such desired angle while swinging on the pivot 8 as de scribed above.

Having accomplished the truing of one side of the grinding wheel edge, it will easily be understood that the motion of the lever 38 can be reversed by a suitable connection on the grinding mechanism thereby procuring a similar action for the truing of the other side of the grinding wheel edge.

Having thusdescribed my invention, 1 claim 1. A device of the'class described comprising a frame having means for oscillating movement in a suitable plane, a diamond carrying lever mounted on the said frame having means for oscillating movement in a plane at right angles to the first named plane, operating means engaging with the diamond carrying lever, and a friction member inserted between the operating means and the frame.

2. A device of the class described comprising a frame having means for oscillating movement in a suitable plane, an adjustable stop mounted near the frame in the path of the oscillating movement of the frame, a diamond carrying lever mounted on said'frame having means for oscillating movement in a plane at about right angles to the oscillating movement of the frame, operating mechanism engaging with the diamond carrying lever, and a friction member inserted between the operating means and the frame.

8. A device of the class described comprising a base plate having a standard projeeting upwardly provided with a bore, a shaft mounted turnably in the bore of the standard, a gear keyed to the one end of the shaft, a bevel gear pinion keyed to the opposite end of the shaft, an engaging member provided near the bevel gear pinion on the shaft, a frame turnably mounted on the standard near the base plate having a hearing provided near its middle turnably fitting over the engaging member on the shaft, a friction member disposed into the bearing of the frame slidably engaging the frame with the shaft, an adjustable lever mounted on the base plate forming an adjustable stop in the path of the oscillating movement of the frame, anoperating lever mounted on the base plate engaging with the gear on the shaft, and a diamond carrying lever mounted on the frame having means engaging with the bevel gear pinion for oscillating movement in a plane at about right angles to the oscillating movement of the frame.

4. In a device of the class described in combination with an oscillating frame and a diamond carrying lever oscillating in a plane at right angles to the plane of oscillation of the frame, operating means turnably mounted in the frame so as to cause the oscillating movement of the diamond carrying lever when the frame stands in either of its stopping positions in its oscillating movement.

5. In a device of the class described in combination with an oscillating frame, a diamond carrying lever mounted on the frame so as to oscillate in a plane at about right angles to the oscillating movement of the frame, and operating means mounted concentrically to the oscillating movement of the frame within the frame and engaging with the diamond carrying lever so as to cause the oscillating movement of the lever; a friction member inserted between the operating means and the frame so as to hold the operating means engaged with the frame during the oscillating movement of the frame while the friction member allows the turning of the operating means when the frame comes to either of its terminations in its oscillating movement so as to cause the oscillating movement of the lever in either of the stopping positions of the oscillating movement of the frame.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

, JOSEPH A. STANSBURY.

Witnesses O'r'ro H. KRUnGnn, C. MITSOHLER.

Gopies of this patent may be obtained for five cents each, byeddressing' the "tiommissioner of Patents,

Washington, D. G. 

